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back pressure sustaining valve Not only is it reasonable in structure, fine in workmanship, and beautiful in appearance, it also has the characteristics of simple control, quick installation, and easy repair and maintenance. It is of high quality and durable.

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After years of solid and rapid development, SHSUOTE Valve has grown into one of the most professional and influential enterprises in China. back pressure sustaining valve Having devoted a lot to product development and service quality improvement, we have established a high reputation in the markets. We promise to provide every customer throughout the world with prompt and professional service covering the pre-sales, sales, and after-sales services. No matter where you are or what business you are engaged in, we'd love to help you deal with any issue. If you want to know more details about our new product back pressure sustaining valve or our company, feel free to contact us.back pressure sustaining valve is made of high-quality materials and refined by advanced manufacturing technology and fine processing technology. The surface is polished and smooth, and the hand feels hard and thick. Drainage, fire protection, construction and other industries have applications.

Thanks to the efforts of our staff,Shanghai Suote Valve Co.,Ltd. can launch our 500X Hydraulic Pressure Relief Control Valve release meeting as scheduled. Our Control Valve is supplied with a competitive price . After the 500X Hydraulic Pressure Relief Control Valve was launched, we received good feedback, and our customers believed that this type of product could meet their own needs. Having analyzed the industry dynamics and researched the market development, we ensure our gate valve,Slow closing check valve,Pressure reducing valve,Double eccentric hemispherical valve,Double eccentric butterfly valve,Pipeline Ball Valve,Triple eccentric hard seal butterfly valve has advantages in both its appearance and performance. It is designed to be of a unique structure and look, making it highly attractive to potential customers. In addition, the features of our 500X Hydraulic Pressure Relief Control Valve makes it more valuable.

Product Description

1.Products details

01.Description
Pressure relief valve is composed of hydraulic control valve main valve and pressure relief guide valve. It is a commonly used pressure control valve to control the opening and closing of main valve through the opening and closing of guide valve.The valve is suitable for the water supply network or building water supply system to relieve pressure, so that the system pressure is not higher than the valve set pressure value, to ensure the safety of the system pipeline or to maintain the minimum water supply pressure of the pipeline in front of the valve.

02.Main parts&material

No.	Part	Material	China stardard
1	body	ductile iron	QT450-10
2	bonnet	ductile iron	QT450-10
3	Seat ring	stainless steel	ZG1Cr18Ni9
4	Yoke	ductile iron	QT450-10
5	Stem	stainless steel	20Cr13
6	Spring	stainless steel	1Cr18Ni9
7	Diaphragm	rubber	NBR+Reinforced nylon
8	Ball seat	rubber	NBR
9	Pipe fitting	brass/stainless steel	HPb59-1/0Cr18Ni9
10	Pilot Relief Valve	brass	HPb59-1

03.Features
001.Hydraulic control, no external driving force.
002.The main valve has only one moving part and the failure rate is low.
003.Diaphragm structure, no friction, high control sensitivity.
004.The pressure behind the valve does not change with the change of the pressure in front of the valve.
005.The pressure behind the valve does not change with the change of system flow;
006.Good static pressure reduction effect;
007.Wide range of pressure regulation after valve;

04.Dimensions

DN	L	ØD			ØK			H	N-Ød			ØB
DN	L	PN10	PN16	PN25	PN10	PN16	PN25	H	PN10	PN16	PN25	PN10	PN16	PN25
50	230	165	165	165	125	125	125	177	4-Ø19	4-019	4-019	Ø99	Ø99	Ø99
65	290	185	185	185	145	145	145	202	4-Ø19	4-019	8-019	Ø118	Ø118	Ø118
80	310	200	200	200	160	160	160	219	8-Ø19	8-Ø19	8-019	Ø132	Ø132	Ø132
100	350	220	220	235	180	180	190	243	8-Ø19	8-Ø19	8-Ø23	Ø156	Ø156	Ø156
125	400	250	250	270	210	210	220	243	8-Ø19	8-Ø19	8-Ø28	Ø156	Ø156	Ø156
150	480	285	285	300	240	240	250	333	8-Ø23	8-Ø23	8-Ø28	Ø211	Ø211	Ø211
200	600	340	340	360	295	295	310	428	8-Ø23	12-Ø23	12-Ø28	Ø266	Ø266	Ø274
250	730	405	405	425	350	355	370	478	12-Ø23	12-Ø28	12-Ø31	Ø319	Ø319	Ø330
300	850	460	460	485	400	410	430	538	12-Ø23	12-Ø28	16-Ø31	Ø370	Ø370	Ø389
*350	980	520	520	555	460	470	490	550	16-Ø23	16-Ø28	16-Ø34	Ø429	Ø429	Ø448
NOTE: 1. *DN 125/350 use same internal as DN100/300 2. AISI 304 factory standard material, consult factory for AISI 316 material

05.Execution standard

Design standard	CJ/T219, JB/T10674
Connection standard	GB/T17241.6
Face spacing standard	GB/T12221
Inspection testing standard	GB/T13927

06.Technical parameters

Nominal diameter	DN50~DN250(2"~10") PN10 DN50~DN250(2"~10") PN16 DN50~DN200(2"~8") PN25
Nominal pressure	0.3MPa~1.7MPa 1.7MPa~2.1MPa
Operating temperature	0°C~85°C
Seal test	1.1PN
Shell test	1.5PN
Suitable medium	Water

07.Operating principle
The relief/holding valve is composed of the hydraulic control valve main valve and relief guide valve, controlling the opening and closing of the main valve through the opening and closing of the guide valve.
The relief guide valve is connected to the front end of the main valve through a copper pipe to sense the pressure in the front end.When the pressure at the front end is greater than the set pressure value of the valve, the pressure relief guide valve is opened and the upper chamber of the main valve is drained outward to open the pressure relief valve.When the pressure at the front end is less than the set pressure value of the valve, the pressure relief guide valve will be closed and the upper chamber of the main valve will stop draining water to the outside, so that the main valve will gradually close and achieve zero leakage.The valve setting pressure value can be adjusted through the adjusting screw on the relief guide valve.

2.Factory tour

3.FAQ

Q1.How about your delivery time?
A. Commonly, it is 5-10 days if in enough stock. It will takes about 20-30 days after receiving the deposit, the delivery time depends on the items and the order quantity.

Q2: Are you trading company or manufacturer ?
A: We are a manufacturer of hydraulic control valve,gate valve,butterfly valve,check valve,pressure reducing valve and other valve parts for Water plant, secondary water supply, municipal pipe network, reservoir, garbage treatment plant, subway and other industries in municipal engineering;Petrochemical, steel plant, power plant, shipbuilding and paper-making, bio-pharmaceutical, etc

Q3: Can you produce according to our own drawings?
A: Yes, please send your own drawing draft to us.OEM items are welcome.

Q4: Do you provide samples ? is it free or extra ?
A: Yes, we'd like to offer the sample for free charge but the freight will be on your charge.

Q5: Do you have agent or representative abroad?
A: We don't have any agents abroad up to now. If you have interests to join us as agent and enjoy more discounts.Just feel free to contact us then we can discuss more details.

Q6: Can we print the LOGO on products?
A: Yes, the OEM is available with the permission of our customers.

Q7. what is your payment term?
A: T/T or L/C,if you want any other way,please contact us.

Q8: what is your main market?
A:Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe,  North America, South America, and so on.

Q9: If products have some quality problem, how will you deal with?
A: We will be responsible for all the quality problems.

Q10: What can I get from cooperating with SUOTE VALVE?
A:   1. Special valves, with customized service.
     2. Timely production and delivery, time is money.
     3. Market protection service, long term business strategy.

More info pls just feel free to contact:
Stephen Sun|Sales Manager
Shanghai Suote Valve Co.,Ltd.
Add:No. 369,Maoting Road,Chendun Town,Songjiang District,Shanghai.
Tel:+86 21 57711803  Fax:+86 21 57877055

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